update readme [skip ci]

README.md

@@ -2,8 +2,7 @@
 
 [<img src="https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png" alt="Get it on Google Play" height="80">](https://play.google.com/store/apps/details?id=com.vrem.wifianalyzer)
 [<img src="https://f-droid.org/badge/get-it-on.png" alt="Get it on F-Droid" height="80">](https://f-droid.org/repository/browse/?fdid=com.vrem.wifianalyzer)
-[<img src="https://images-na.ssl-images-amazon.com/images/G/01/mobile-apps/devportal2/res/images/amazon-underground-app-us-white.png" alt="Get it at Amazon Store" height="70">
-](https://www.amazon.com/VREM-Software-Development-WiFiAnalyzer-open-source/dp/B06XZT7RYD)
+[<img src="https://raw.githubusercontent.com/andOTP/andOTP/master/assets/badges/get-it-on-github.png" alt="Get it on GitHub" height="80">](https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/releases/latest)
 
 This is the official repository of WiFi Analyzer.